Side bearing for bogie of a railway car

ABSTRACT

(57) A side bearing for a bogie of a railway car is provided limiting reciprocal movement of the bogie and underframe of a railway car. The side bearing comprises a support cap (1) mounted spring loaded by means of resilient members (2) into a box-like supporting body (3). Further, the side bearing comprises a limiter (4) locked in the box-like supporting body (3). The limiter (4) can be formed as a stud, bolt or rod extending through aligned continuous slots (1.1) and (3.1) which are provided through guiding walls of the box-like supporting body (3) and guiding walls of the support cap (1). Using the limiter for the support cap (4) provides permanent or one-piece interconnection between the support cap (1) and the box-like supporting body (3) both during operation and maintenance of a railway car.

CROSS REFERENCE TO RELATED APPLICATION

This application claims priority to Russian Application No. 2014137208 filed 16 Sep. 2014, herein incorporated by reference in its entirety.

TECHNICAL FIELD

The invention relates to structural elements for bogies of railway cars, in particular, to side bearings limiting reciprocal movement of the bogie and car underframe.

BACKGROUND AND SUMMARY OF THE INVENTION

Eurasian patent application No. 201270078, 61F5/14, discloses a slidable bearer for bogie of a railway car, wherein the slidable bearer comprises a support cap mounted spring loaded by means of resilient members into a box-like supporting body.

Disadvantageously, this can provoke an unwanted spontaneous release of the support cap from the box-like supporting body when the support cap is unloaded during operation or maintenance of a railway car.

Further, RU 90396, 61F5/12, discloses a side bearing for body of a freight railway car to bear upon the bogie, wherein the side bearing comprises a support cap mounted spring loaded by means of resilient members into a box-like supporting body.

This known apparatus is considered as a closest prior art to the claimed invention; however, this known apparatus has no arresting or limiting members between the support cap and the box-like supporting body, which could prevent the support cap from moving out of the box-like supporting body during operation or maintenance of a railway car. This reduces adaptability to streamlined maintenance of railway cars. Furthermore, this reduces traffic safety for railway transport.

Thus, it is an object of the claimed invention to increase reliability of the side bearing for bogie of a railway car. Another object of the claimed invention is to improve adaptability to streamlined maintenance of railway cars.

The objects of the present invention are achieved by a side bearing for bogie of a railway car. The side bearing comprises a support cap mounted spring loaded by means of resilient members into a box-like supporting body. The side bearing is provided with a limiter to limit movement of the support cap relative to the box-like supporting body. The limiter is formed as a rod extending through aligned continuous slots which are provided through guiding walls of the box-like supporting body and guiding walls of the support cap. Further, the limiter is locked by lock members.

In one embodiment, the limiter can be formed as a stud or bolt locked by lock members which are formed as a nut and washer.

In another embodiment, the lock members of the limiter can be formed as a washer and split pin.

In yet another embodiment, the resilient members can be formed as, e.g., a set of compression springs.

It is to note that the side bearing according to the invention is featured in that the side bearing comprises a limiter to limit movement of the support cap relative to the box-like supporting body. The limiter is formed as a rod extending through aligned continuous slots which are provided through guiding walls of the box-like supporting body and guiding walls of the support cap, wherein the limiter is locked by lock members.

Advantageously, the limiter is formed as a stud or a bolt locked by lock members which are formed as a nut and washer.

Preferably, the lock members of the limiter are formed as a washer and split pin. Preferably, the resilient members are formed as a set of compression springs.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is described in greater detail in the following, with reference to the accompanying drawings, in which

FIG. 1 is a partial cut view of a side bearing for bogie of a railway car;

FIG. 2 is a view of a side bearing for bogie of a railway car having a limiter formed as a stud with lock members formed as washers and nuts;

FIG. 3 is a similar view to detail a limiter formed as a bolt with lock members formed as a nut and washer;

FIG. 4 is a similar view to detail a limiter formed as a rod locked at both ends by lock members formed as washers and split pins.

DETAILED DESCRIPTION

The side bearing for bogie of a railway car comprises a support cap 1 (FIG. 1) mounted spring loaded by means of resilient members 2 into a box-like supporting body 3. Aligned continuous slots 1.1 and 3.1 are provided through guiding walls of the box-like supporting body 3 and guiding walls of the support cap 1. A limiter for the support cap 1 extends through the aligned slots 1.1 and 3.1. The limiter is formed as a stud 4 locked by lock members which are formed as washers 5 and nuts 6 (FIG. 2). In a similar way, the limiter for the support cap 1 can be formed as a bolt 7 locked by washer 5 and nut 6 (FIG. 3), or as a rod 8 locked at both ends by washers 5 and split pins 9. The resilient members 2 can be formed as a set of compression springs.

The side bearing for bogie of a railway car operates as follows.

When a railway car moves upon a rail track the car body generates vibrations which are transmitted on supporting surface 1.2 of the support cap 1. As a result, the support cap 1 moves along the guiding walls of the box-like supporting body 3 and engages the resilient members 2. The resilient members 2 become compressed and absorb energy of mutual vibrations between the car body and bogie. The limiter, which is formed as a stud 4 or bolt 7 or as a rod 8, resides in aligned continuous slots 1.1 and 3.1 and provides one-piece structure of the side bearing both when a railway car moves and when the bogie is removed from the railway car. The aligned continuous slots 1.1 and 3.1 have lengths to provide unobstructed operational movement of the support cap 1 along the guiding walls of the box-like supporting body 3.

Using the limiter for the support cap 1 to limit movement thereof relative to the box-like supporting body 3 provides permanent or one-piece interconnection between the support cap 1 and the box-like supporting body 3, thus maintaining working capacity of the side bearing both during operation and maintenance of a railway car. This increases reliability of the design of the side bearing, increases adaptability to streamlined maintenance of railway cars in improving traffic safety for railway transport. Claims 

1. A side bearing for bogie of a railway car, the side bearing comprising a support cap mounted spring loaded by means of resilient members into a box-like supporting body, wherein the side bearing is provided with a limiter to limit movement of the support cap relative to the box-like supporting body, the limiter being formed as a rod extending through aligned continuous slots which are provided through guiding walls of the box-like supporting body and guiding walls of the support cap, wherein the limiter is locked by lock members.
 2. The side bearing according to claim 1, wherein the limiter is formed as a stud or bolt locked by lock members which are formed as a nut and washer.
 3. The side bearing according to claim 1, wherein the lock members of the limiter are formed as a washer and split pin.
 4. The side bearing according to claim 1, wherein the resilient members are formed as a set of compression springs. 